IPC Subgroup
C22C 1/059 Making alloys comprising less than 5% by weight of dispersed reinforcing phases
Introduced: January 2023
Full Title
Making non-ferrous alloys > by powder metallurgy > Mixtures of metal powder with non-metallic powder > Making alloys comprising less than 5% by weight of dispersed reinforcing phases
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- Subclass:
- ALLOYS
Additional Content
dispersed reinforcing phase dispersed reinforcing phases the ultrafine second phase (hardened phase) for reinforcing alloys, which is insoluble in base metal
Top Applicants
Top 10 applicants by patent filingsfor class C22, 2013–2023, worldwide · Source: EPO PATSTAT
- JFE STEEL JP 7,152
- NIPPON STEEL CORPORATION JP 5,416
- POSCO (POHANG IRON AND STEEL COMPANY) KR 4,530
- JFE STEEL 3,986
- CENTRAL SOUTH UNIVERSITY 3,086
- NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 2,843
- CHINESE ACADEMY OF SCIENCES 2,702
- ARCELORMITTAL LU 2,124
- NSSMC (NIPPON STEEL & SUMITOMO METAL) 2,075
- KOBE STEEL JP 1,891